Pasow BNC Male Plug to F Female Jack Adapter Coax Connector Coupler adapters CCTV Camera (20PCS) Package Content : 20 x Adapter Plug Type : BNC Male to F Female;Overall Size : 2.8 x 1.4cm/ 1.1" x 0.6"(L*Max*D) Special promotion for Security Camera Ideal to extend cable runs with male BNC Converter Nickel plated body for enhanced corrosion resistance